A new synthetic approach to the clinically useful, anti-HIV-active nucleoside, 9-(2,3-dideoxy-2-fluoro-β-D-threo-pentofuranosyl)adenine (β-FddA). Introduction of a 2′-β-fluoro substituent via inversion of a readily obtainable 2′-α-fluoro isomer
作者:Maqbool A. Siddiqui、John S. Driscoll、Victor E. Marquez
DOI:10.1016/s0040-4039(98)00014-8
日期:1998.3
A convenient route to the anti-HIV active compound, 9-(2,3-dideoxy-2-fluoro-beta-D-threo-pentofuranosyl)adenine (1, beta-FddA) started with the facile introduction of fluorine at C2' from the alpha-side of protected 9-(beta-D-arabinofuranosyl)adenine (ara-A). Inversion of the stereochemistry at C2' was accomplished via a stable vinyl intermediate (6), which underwent stereoselective reduction of the double bond to give the desired 2'-F-threo isomer with the opposite beta-fluoro stereochemistry. Published by Elsevier Science Ltd.